Printing composition.



' dark goods.

- UNITED srarns PATENT ornion.

FRED A. PUTNAM, OF MEI-ROSE, MASSACHUSETTS.

PRINTING COMPOSITION.

No Drawing.

To all whom it may concern Be it known that I, FRED A. PUTNAM, a citizen of the United States, residing at Melrose, county of Middlesex, State of Massachusetts, have invented an Improvement in Printing Compositions, of which the following description is a specification.

This invention relates toan ink or printing composition which has the characteristic that it will make differently-colored impressions on differently colored materials. While the ink is capable of use generally where it is desirable to print on differently-colored materials, it is especially useful in the shoemanufacturing business. In the manufacture of shoes it is customary to stamp or print certain marks designating the size of the shoe, the case number, or other data, on the linings of the shoes and on the different pieces of leather which make up the shoe upper, and also to print or stamp the name of the shoe or the name of the manufacturer on the inner facing of the shoe, or on the sole of the shoe, or in some other location.

In printing or stamping the name of the shoe or the name of the manufacturer on the shoe, many manufacturers prefer to use a printing composition which will produce either a silver or a gold or gilt impression. A silver impression shows up well on black leather and on black material, and also fairly well on tan, but on white goods, such as the white lining of the Shoe, or white leather, such an impression is very indistinct and is hard to read. A dark-colored ink will, of course, print well on white goods, but Will not make a readable impression on I have devised a new printing composition which will make a silver or other bright impression on dark-colored or brown goods, but will make a purple or similar colored inipression on white goods.

In. my co-pending application, Se. No. 606,117, filed February 2, 1912, I have shown and described a machine for marking on leather which is now being used to a considerable extent by shoe manufacturers for marking or-embossing the name of the shoe, or the name of the manufacturer, or other trade name, on shoes. Where a machine of this sort is being used for marking on darkcolored leather with an'ink which produces a silver impression, such, for instance, as an ink which comprises an aluminum bronze powder and t is desired to mark or print Specification of Letters Patent.

Application filed December 20, 1912.

Patented Nov. '7, 1916.

Serial No. 737,862.

some impression on light-colored goods, it has heretofore been necessary to supply to the machine a different character of ink adapted to print on the light-colored goods, for the ink or printing composition which has heretofore been used for making the silver impression will not make a readable impression on light goods. This change of ink in the machine necessitates cleaning up the machine entirely in order that no trace of the ink of one charactermay be left to mingle with and affect the new ink to be supplied. In some shoe-manufacturing establishments it is desirable to shift from one kind of goods to another at more or less frequent intervals, and with the inks heretofore used, each time that this is done requires a cleaning up of the machine and a complete change in the character of the ink. Vith my improved ink, however, nothing of this sort is necessary, for the ink will make an equally readable impression on either dark or light-colored goods and the change from black or tan shoes to white shoes can be made without necessitating any change whatever in the machine. This is a matter of great importance in the Shoe trade.

My improved ink which has the above characteristics is made with two coloring ingredients which are non-blendable in the sense that when they are mixed together in the same composition neither one affects the color which the other will produce on the goods and one of which is adapted to print a light-colored impression and the other of which will make a dark-colored impression on light goods.

I prefer to use as the coloring ingredient for marking on the dark goods one which will give either a silver or a gilt impression. Silver powder or aluminum bronze powder will answer for this purpose. For the coloring ingredient which makes an impression on the light-colored goods I prefer to use an anilin dye, a purple color being a good one for this purpose. I also prefer to incorporate these coloring ingredients into a gummy base. I have secured good results from making a printing ink by taking a suitable vegetable gum, such, as gum dammar and cutting it with'oil, such, for instance, as oil of camphor, or china Wood oil, and then incorporating into this gummy base thus formed the two coloring ingredients. The anilin colors will preferably be mixed with oil of camphor so as to make a fluid mass which can be readily stirred into the gummy base.

In preparing my improved ink I first take a suitable quantity of gum and cut it with or dissolve it in oil of camphor or china wood oil until I have formed a mass having the consistency of a paste. The anilin coloring matter is then cut with oil of camphor and the proper proportion of this is mixed with the gummy base. The metal coloring ingredient, such as aluminum bronze powder, or silver powder, or powdered gold, is then mixed with the other materials, thus producing a printing ink having a semiliquid waxy consistency. Best results can be secured with this printing ink by using it on a printing machine employing a heated die or type member, and when the ink is thus used for making an impression on dark-colored goods, such as black leather or black cloth, the impression will have a silver or gold appearance, the anilin coloring matter apparently having no influence on the appearance of the lll'lPl'GSSlOll. When the same ink is used for printing on white cloth or white leather the metal ingredient of the ink appears to have no effect upon the leather but the impression which is left will have the same color as that of the anilin coloring ingredient. I ascribe this result to the fact that the metal coloring ingredient and the anilin coloring ingredient do not blend, but each retains in the composition its individual characteristics with the result that on dark-colored goods the metal coloring ingredient is the one which predominates and makes the visible impression, while on light-colored goods the anilin coloring ingredient is that which predominates and makes the visible impression.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. A printing ink comprising a base formed of gum cut or digested in oil and having a metallic coloring ingredient and a non-metallic coloring ingredient incorporated therein, these constituents being mixed in proper proportions to form an ink suitable for use in making a printed impression.

2. A printing ink comprising a base formed of a gummy substance cut or digested in oil and having incorporated therewith a metallic and a non-metallic coloring ingredient having contrasting colors, these constituents being mixed in proper proportions to produce an ink suitable for use in making a printed impression.

3. A. printing ink comprising a base formed of a gummy substance cut or digested in oil and having incorporated therewith a metallic and an anilin coloring ingredient having contrasting colors, these constituents being mixed in proper proportions to form an ink suitable for use in making a printed impression.

4. A printing ink comprising a base formed of gum cut or digested in oil and having incorporated therewith two nonblendable coloring ingredients, these con stituents being mixed in proper proportions to form an ink suitable for making a printed impression. 5. A printing ink comprising a base formed of a gummy substance cut or digested in oil and having incorporated therewith two coloring ingredients, one of which makes alight impression on dark goods and the other of which makes a dark impression on light goods. I I

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

FRED A. PUINAM.

Witnesses: J

ETHEL C. LoNGFELLoW, CONRAD W. TUPPER. 

